Copyright>        OpenRadioss
Copyright>        Copyright (C) 1986-2024 Altair Engineering Inc.
Copyright>    
Copyright>        This program is free software: you can redistribute it and/or modify
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Copyright>        GNU Affero General Public License for more details.
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Copyright>        along with this program.  If not, see <https://www.gnu.org/licenses/>.
Copyright>    
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Copyright>        Commercial Alternative: Altair Radioss Software 
Copyright>    
Copyright>        As an alternative to this open-source version, Altair also offers Altair Radioss 
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C.../INTER18/
#include "my_real.inc"

      COMMON /INTER18_i/  
     . INTER18_AUTOPARAM, INTER18_db_truss

      INTEGER  
     . INTER18_AUTOPARAM, INTER18_db_truss
     
      COMMON /INTER18_l/
     . INTER18_IS_VARIABLE_GAP_DEFINED
     
      LOGICAL
     . INTER18_IS_VARIABLE_GAP_DEFINED

      COMMON /INTER18_r/  
     . INTER18_RHO, INTER18_VEL, INTER18_SURF, INTER18_VEL_OLD

      my_real  
     . INTER18_RHO, INTER18_VEL, INTER18_SURF, INTER18_VEL_OLD
